VOGONS


Driver for MediaMagic Telemetry-32 OPTi 82C950

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Reply 20 of 24, by cyclone3d

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Was scouring the web for some other stuff and I came across the archived Evertek page. They apparently were also a reseller / clearance house for hardware.

Their driver page has listings for the Media Magic Telemetry 32 card. Different packages for Windows 3.1 and Windows 95. Each package being 5 disks:
http://web.archive.org/web/19970701213009fw_/ … ound_cards.html

File names were as follows:
Windows 3.1
t32w3xd1.exe - t32w3xd5.exe

Windows 95
t32w95d1.exe - t32w95d5.exe

Manual
telemetry32.pdf

Unfortunately, this is one of two cards on that page that didn't have the files archived.

Those file names bring up no results on google or on an ftp search.

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Reply 21 of 24, by crazybubba64

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My most sincere apologies for necro'ing this dusty old thread, but I figured it would be good to follow-up on my old post.

I finally got this damn card working! It turns out that it works just fine in Windows 95.
I'm running it on a Pentium 133MHz system.

And wow... it sure can make... sounds?

It features a 1M wavetable and "OPL3 emulation".

I made some recordings of the MIDI playback attempting to play onestop.mid:
1M Wavetable: https://www.youtube.com/watch?v=g8cZdwxGK8g
OPL3 Emulation: https://www.youtube.com/watch?v=GqxOxc5bjIs

WARNING: There is some horrible interference/noise that I can't seem to get rid of (it's present on both the amplified output and line out). I'm thinking my card is partially defective, but I don't think that would be the sole contributor to the "performance" of the MIDI playback.

The MIDI playback suffers terribly from real poor polyphony support. Especially in the wavetable mode.

Reply 22 of 24, by andyraf

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crazybubba64 wrote on 2024-06-06, 02:57:
My most sincere apologies for necro'ing this dusty old thread, but I figured it would be good to follow-up on my old post. […]
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My most sincere apologies for necro'ing this dusty old thread, but I figured it would be good to follow-up on my old post.

I finally got this damn card working! It turns out that it works just fine in Windows 95.
I'm running it on a Pentium 133MHz system.

And wow... it sure can make... sounds?

It features a 1M wavetable and "OPL3 emulation".

I made some recordings of the MIDI playback attempting to play onestop.mid:
1M Wavetable: https://www.youtube.com/watch?v=g8cZdwxGK8g
OPL3 Emulation: https://www.youtube.com/watch?v=GqxOxc5bjIs

WARNING: There is some horrible interference/noise that I can't seem to get rid of (it's present on both the amplified output and line out). I'm thinking my card is partially defective, but I don't think that would be the sole contributor to the "performance" of the MIDI playback.

The MIDI playback suffers terribly from real poor polyphony support. Especially in the wavetable mode.

Such memories. I worked on the software and hardware of this card. The DSP3210 chip is a 32-bit floating-point DSP that runs its own operating system (VCOS - Visible Caching Operating System). It handles everything in software via downloadable DSP modules: MIDI synth, audio decompression, modem, fax, JPEG decompression (at the time, most PCs didn't even have an x87 coprocessor). The two big chips labeled EVEN and ODD are the EMU SoundFont MIDI libraries. THe big "MediaMagic" chip (if you peel off the label I think it says OPTI) is a glue chip that implements the ISA bus interface and other random logic (I think it implements my first ever patent for a DMA controller). The OPTI chip also implements a set of "OPL3" registers for soundblaster emulation, although the actual sound generation is still done on the DSP via OPL3 emulation code.

There was a brief period of time in the early 90's when everyone thought ever PC was going to have a DSP in their PC, and TI/IBM/AT&T were advancing competing DSP APIs. Then Intel and Microsoft stepped in and announced that they would be evangelizing an official DSP API in the future, which basically killed the market and gave Intel time to implement DSP-like features on their x86 chipsets.

The DSP3210 was the same chip that Apple shipped in their Quadra 840 AV Mac.
https://wiki.preterhuman.net/Macintosh_Quadra_840AV#DSP

Reply 23 of 24, by andyraf

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andyraf wrote on 2025-07-10, 18:27:

There was a brief period of time in the early 90's when everyone thought ever PC was going to have a DSP in their PC, and TI/IBM/AT&T were advancing competing DSP APIs. Then Intel and Microsoft stepped in and announced that they would be evangelizing an official DSP API in the future, which basically killed the market and gave Intel time to implement DSP-like features on their x86 chipsets.

The DSP3210 was the same chip that Apple shipped in their Quadra 840 AV Mac.
https://wiki.preterhuman.net/Macintosh_Quadra_840AV#DSP

Good summary of the players before Intel/Microsoft came in and killed the market:
https://websrv.cecs.uci.edu/~papers/mpr/MPR/A … CLES/081101.pdf

Reply 24 of 24, by Tiido

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It is always great to hear from the actual developers ~

As far as the OPL3 emulation goes, do you remember any details about it ? There have been a lot of attempts and many didn't end up sounding all that good, so I wonder what were the hurdles to overcome and what prevented "success".

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